This docking station uses two PCBA modules connected through a flat cable, which are respectively used for USB-C interface expansion and video expansion functions. The USB interface expansion uses VL817+RTS5411 hub chip for interface expansion, GL3224 for card reader function, and RTL8153 for gigabit wired network. The video expansion function uses PS176HDM to convert DP signal to HDMI, and RTD2183 to convert video. The small board connected to M2 hard disk uses JMS578 master chip.